Supplemental cooling system for engine radiators



May 19, 1959 T. w. HUFFMAN, SR., Erm. 2,387,097

SUPPLEMENTAL COOLING SYSTEM FOR ENGINE RADIATORS Filed sept. 19, 1955 ,y/2 ad 3:

7/lomas ll( Maf/"waff 5f Thomas l. #aff/27a, Jr.

INVENTORS ATTORNEY United Staes Patent 'O SUPPLEMENTAL 'COOLING SYSTEMFOR ENGINE RADIATORS Thomas W. Huffman, Sr., and Thomas W. Huffman, Jr.,Odessa, Tex.

Application September 19, 1955 Serial No. 535,028

4 tClaims. (Cl. .12S-41.51) l This invention relates to 'internalcombustion engines vand more particularly to an auxiliary cooling`system `for `the radiators of heavy duty engines of this type.

`ly cool the engine for ecient performance Where these "engines are keptin continuous operation for long'perrods `of time. lt therefore becomes`desirable that .the -englnes be equipped with an auxiliary heatexchanger designed'to supplement the conventional cooling system of theengine,

`cooperating therewith but supplied with `watertfor rapid exchangeindependent from that circulated through the core units of the heattransfer `section of the engine radiator. I The principal objectsoftheinventionare: inst, .to `provide an auxiliary or supplementalcoolingcsystem ,for `heavy duty internal combustion engines. Second: .to:provide a heat .exchanger of this type and for the purpose set forthwhich is at once simple of construction and installation and, third: aheat exchanger whose installation may 4be quickly accomplished and willtherefore require but a minimum of shut-down time.

Broadly, the invention anticipates a heat exchanger consisting of aplurality `ofjrelatively parallel tubes formed of metal having high`heat conducting quali-ties andwhich extend through the upper and lowertanks of the `radiator in transverserelationship with the core unitsthereof, the opposite ends of the tubes being in collectivecommunication with inlet and outlet headers on opposite sides of 'theradiator tanks and through which water from a source separate from thatcirculated through the conventional cooling system is passed under pumppressure to elfect rapidheat `exchange with the water of the radiator`.surging through the tanks thereof.

Other objects will become manifest in the course of the followingdescription when considered with the `annexed drawing, wherein:

Figure l is a fragmentary front perspective view of an engine radiatorshowing the invention installed thereon.

Figure 2 is a vertical sectional view of the upper tank of the radiatorshowing the heat exchanger tubes extending therethrough.

Figure 3 is an end view of the upper tank taken on line 3-3 of Figure 2.

Figure 4 is an end elevational view of one of the headers with the coverplate removed.

Figure 5 is a schematic View showing the radiator and circulatory systemincluding a coolant supply reservoir, and

Figure 6 is an enlarged fragmentary sectional view of one of theheaders.

Continuing with a more detailed description of the drawing, referencenumeral 10 denotes generally a conventional heavy duty engine radiatorequipped with the usual core units 11 or with block or solid type coreswhich are in communication at their upper and lower ends with the upperand lower tanks 12 and 13, respec- ..1efsnfsd MsylS, 1.959.

2 tively (Figure 5). The tanks 1.2 and 13 are supported in relation tothe core Ysectionby conversely disposed channel members 14 and 15between which the core units 11 are assembled, as shown.

It is to be understood thatthe invention is applicable to both `theupper 'and lower tanks 12 `and 13 respectively vbut for purposes Aof'simplied illustration, the invention is shown in connection with theupper `tank 12 only.

The tank 12, which is of conventional manufacture, is removed from theradiator 10 and a plurality of equally spaced holes 16 are drilled ineachendthereof (Figure 3) `to `accommodate the ends of an equal numberof tubes 17 which extend from end to end df the tank, `the ends of thetubes 17 Fbeing sealed'in the ends of the tank to prevent leakage ofwater from the latterabout the tubes.

A Water outlet header or manifold 18 is `attached'to one end of the tank1'2 to embrace the open ends of the series of tubes `17. This outletheader is an openended, substantially rectangular casting 19 having aninner flange 2l) (Figure 4) next adjacent the web 21 of the side chan-:nel member 14. A sealing gasket 22 is interposed between the channelmember 14 and the end of the tank 12, as shown, and the channel memberis provided with an opening 23 to admit water from the 4tubes 17 intothe header 1S.

The ange 2t) is formed .with .inwardlydirected projectionsZS, eachhaving ahole 26 adapted to .receive a bolt `27. The boltsi27 pass.through the casting 19 and enter Athreaded. holes 2S (Figure 3) spacedabout the area in the end ofthe tank 12 `in which `the holes 16 aredrilled to .receive the ends `of theztubes `17. A cover plate 29 isprovidedfor thecasting 19 and has holes accommodating the bolts `2'7, A.sealing gasket 30 .is interposed .between the cover plate and the outer:endof the casting to make the `outletheader 18 watertight. .For like.reason, rubber seal- `letheader 18just described. The inlet headerconsists `of a casting 34 Ahaving an .internal ange 35 (Figure 2) .nextadjacent the channelmember 15, the latter having an `opening 36 throughwhich water passes `into the .tube `assembly .17 from theheader 33. Asealing gasket 37 iS interposed .betweenthe channelmember 1S Yand theperforated end of the tank 12. The flange 35, identical to thecorresponding Iange 20 of the outlet header 18, has openingscorresponding to the openings 26 of the ange 20 of the outlet header toreceive bolts 39 which are passed through matching holes in a coverplate 4t) overlying the outer end of the casting 34, and for likereason, rubber sealing Washers 40a surround the bolts 39 under the headsthereof, in the manner shown in Figure 6. A sealing gasket 41 isinterposed between the end of the casting and the cover plate to preventleakage of water from the header 33. A flanged opening 42 is provided inthe top of the casting 34 to receive an end of a water inlet pipe 43.

The outlet header or manifold 18 has a clean-out drain 44 in itsunderside and the end of the tank 12 to which the header 18 is boltedhas a pair of knock-out plugs 45 (Figure 3) which are adapted to bedisplaced should the water in the tank freeze.

In stationary installations, such as in oil field use, there is usuallya water storage tank, such as tank 46 (Figure 5) adjacent the engine orengines, as the case may be. The suction side of a pump 47 is made tocommunicate with the tank 46 as by means of a pipe 48,

The water inlet pipe 43 is connected between the pressure side of thepump 47 and the inlet header 33.

From the foregoing it is evident that during operating periods of theengine, water may be continuously circulated by lthe pump 47 from thetank 46 through pipes 48 and 43, through the inlet manifold 33 and tubes17 into the outlet manifold and back into the storage tank 46 throughthe pipe 32. The heat of the water in the cooling system of the engineis transferred to the water being circulated through the tubes 17 in thetank 12 of the radiator and is thus rapidly dissipated, keeping theradiator water at a moderate temperature, thus insuring efficientperformance of the engine.

It `has been stated that supplemental cooling of water circulatedthrough the lower tank 13 may be accomplished in a manner identical tothat just described, if desired. It is also pointed out that thecirculation of the supplemental coolant through the tank 12 may bereversed, that is to say, the inlet header 33 may become the outletheader and the outlet header 18 may become the inlet header with equallyeective results.

Manifestly, the construction as shown and described is capable of somemodification and such modication as may be construed to fall within thescope and meaning of the appended claims is also considered to be withinthe spirit and intent of the invention.

What is claimed is: v

atively parallel tubes extending through holes in each 1. In an engineradiator composed of multiple core sections and upper and lower watertanks in communication with the core sections, a heat exchangercomprising a coolant inlet header on an end of one of the tanks, acoolant outlet header on the opposite end of the tank, the headers eachconsisting of an open ended chamber, one end of which embraces a seriesof holes in the adjacent end of the tank, a gasket between the tank endand the header, a cover plate closing the opposite end of the chamber, agasket between the header and the cover plate to seal the chamber, aplurality of tubes whose ends are seated in the holes of the tank toelfect communication between the headers through the tank, and means forcirculating Water under pressure through the tubes and headers fortransferring heat from water circulated in the core sections and tanksto the water circulating through the tubes.

2. In an engine radiator having a core section and upper and lower watertanks through which water is circulated by the engine, the tanks beingsupported in spaced relation to each other by a pair of converselydisposed channel members connected to opposite ends of the respectivetanks, a supplemental cooling system for the engine comprising aplurality of independent and relend of one of the tanks, and about whichthe circulated water flows, an inlet header" on one of the channelmembers opposite one end of the tank, an outletheader on the companionchannel member opposite the other end of the tank, the channel memberseach having an opening therein opposite the holes in the adjacent end ofthe tank receiving the ends of the tubes, and means for passing waterthrough the inlet header, the tubes and the outlet header independentlyof the water in the tanks and core section to transfer heat from thewater of the radiator to the water of the supplemental cooling system.

3. In an engine radiator having a cooling system incorporating an upperand a lower tank and an intermediate core section, a supplementalcooling system comprising a header on each end of one of the tanks, aplurality of relatively parallel tubes extending through the tank andeffecting communication between the headers, the headers each comprisingan open ended box-like member, one end embracing the open ends of thetubes, a cover plate closing the opposite end of the box-like member, aseries of bolts extending through the cover member and the box-likemember to secure the header to the tank, and means for circulating waterunder pressure through the headers and tubes to effect heat exchangebetween the water of the radiator cooling system and the water of thesupplemental cooling system.

4. In a water cooled engine having an air cooled radatorv of limitedwater capacity and means for circulating water from the radiator to andfrom the engine, a supplemental cooling system comprising a heatexchanger operatively connected in series with the radiator and havingmeans for additionally cooling the circulating water by indirect heatexchange with a comparatively large amount of water supplied to theexchanger from an extraneous source.

References Cited in the le of this patent UNITED STATES PATENTS1,296,761 Cammen Mar. 11, 1919 1,307,016 Metzger Jun. 17, 1919 1,948,929MacPherson Feb. 27, 1934 2,008,164 Wolf July 16, 1935 2,264,820 YoungDec. 2, 1941 2,539,669 Newcomer et al. Jan. 30, 1951 2,591,774 BoothApr. 8, 1952 FOREIGN PATENTS 312,053 Italy Oct. 19, 1933

